# Define gas callbacks for dg.exp.load_lib dg.exp# The use of this function is still in a bit of flux.# It should be theoretically possible to assemble, link, and run a file# but we currently don't support that.  Assembler testcases aren't usually# that elaborate anyway.  :-)proc gas-dg-test { prog do_what tool_flags } {    # FIXME: the gas testsuite doesn't define tmpdir.  Use outdir?    set output_file "./a.out"    switch $do_what {	"preprocess" {	}	"assemble" {	}	"link" {	}	"run" {	    # This is the only place where we care if an executable was	    # created or not.  If it was, dg.exp will try to run it.	    catch "exec rm -f $output_file"	}	default {	    perror "$do_what: not a valid dg-do keyword"	    return ""	}    }    # gas_start prepends $srcdir/$subdir so we must remove it from PROG    # if present.  First remove extraneous //'s.    global srcdir subdir    set dir "$srcdir/$subdir"    regsub -all "//" $dir "/" dir    regsub -all "//" $prog "/" prog    if [string match "$dir/*" $prog] {	regsub "$dir" $prog "" prog    }    # FIXME: This should be gas_start but it doesn't set comp_output.    return [gas_run $prog $tool_flags ""]}proc gas-dg-prune { system text } {    #send_user "Before:$text\n"    regsub -all "(^|\n)\[^\n\]*: Assembler messages:\[^\n\]*" $text "" text    regsub -all "(^|\n)\[^\n\]*: End of file not at end\[^\n\]*Newline inserted." $text "" text    #send_user "After:$text\n"    return $text}